Xiaomi Redmi 15 vs. Samsung Galaxy A15: Which Budget Phone Reigns Supreme?
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🏆 Quick Verdict
For the average user prioritizing longevity and consistent performance, the Xiaomi Redmi 15 emerges as the winner. Its significantly superior battery endurance (67:03h vs 15:28h) and newer Snapdragon 6s Gen 3 chipset provide a more reliable experience, even if the Galaxy A15 boasts a brighter screen.
| PHONES | ||
|---|---|---|
| Phone Names | Xiaomi Redmi 15 | Samsung Galaxy A15 |
| Network | ||
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 32, 38, 40, 41, 42, 48, 66, 71 | 1, 3, 5, 7, 8, 20, 28, 38, 40, 41 |
| 5G bands | 1, 2, 3, 5, 7, 8, 12, 20, 26, 28, 38, 40, 41, 48, 66, 77, 78, 71 SA/NSA | - |
| Speed | HSPA, LTE, 5G | HSPA, LTE |
| Technology | GSM / HSPA / LTE / 5G | GSM / HSPA / LTE |
| Launch | ||
|---|---|---|
| Announced | 2025, August 01 | 2023, December 11 |
| Status | Available. Released 2025, August 01 | Available. Released 2023, December 16 |
| Body | ||
|---|---|---|
| Build | Glass front (Gorilla Glass 3), plastic frame, plastic back | Glass front, plastic back, plastic frame |
| Dimensions | 169.5 x 80.5 x 8.4 mm (6.67 x 3.17 x 0.33 in) | 160.1 x 76.8 x 8.4 mm (6.30 x 3.02 x 0.33 in) |
| SIM | Nano-SIM + Nano-SIM | · Nano-SIM· Nano-SIM + Nano-SIM |
| Weight | 217 g (7.65 oz) | 200 g (7.05 oz) |
| Display | ||
|---|---|---|
| Protection | Corning Gorilla Glass 3, Mohs level 6 | - |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio (~374 ppi density) | 1080 x 2340 pixels, 19.5:9 ratio (~396 ppi density) |
| Size | 6.9 inches, 116.9 cm2 (~85.7% screen-to-body ratio) | 6.5 inches, 103.7 cm2 (~84.3% screen-to-body ratio) |
| Type | IPS LCD, 144Hz, 600 nits (typ), 700 nits (HBM), 850 nits (peak) | Super AMOLED, 90Hz, 800 nits (HBM) |
| Platform | ||
|---|---|---|
| CPU | Octa-core (2x2.3 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55) | Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55) |
| Chipset | Qualcomm SM6375 Snapdragon 6s Gen 3 (6 nm) | Mediatek Helio G99 (6 nm) |
| GPU | Adreno 619 | Mali-G57 MC2 |
| OS | Android 15, HyperOS 2.2 | Android 14, up to 4 major Android upgrades, One UI 7 |
| Memory | ||
|---|---|---|
| Card slot | microSDXC (uses shared SIM slot) | microSDXC (uses shared SIM slot) |
| Internal | 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM | 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM, 256GB 8GB RAM |
| Main Camera | ||
|---|---|---|
| Dual | 50 MP, f/1.8, (wide), 1/2.88" 0.61μm, PDAF Auxiliary lens | - |
| Features | LED flash, HDR | LED flash, panorama, HDR |
| Triple | - | 50 MP, f/1.8, 26mm (wide), 1/2.8", 0.64µm, PDAF 5 MP, f/2.2, 17mm (ultrawide), 1/5.0", 1.12µm 2 MP (macro) |
| Video | 1080p@30fps | 1080p@30fps |
| Selfie camera | ||
|---|---|---|
| Features | HDR | - |
| Single | 8 MP, f/2.0, (wide) | 13 MP, f/2.0, 26mm (wide), 1/3.06", 1.12µm |
| Video | 1080p@30fps | 1080p@30fps |
| Sound | ||
|---|---|---|
| 35mm jack | No | Yes |
| Loudspeaker | Yes | Yes |
| Comms | ||
|---|---|---|
| Bluetooth | 5.1, A2DP, LE, aptX | 5.3, A2DP, LE |
| Infrared port | Yes | - |
| NFC | Yes (market/region dependent) | Yes (market/region dependent) |
| Positioning | GPS, GLONASS, GALILEO, BDS | GPS, GALILEO, GLONASS, BDS, QZSS |
| Radio | No | FM radio (market/region dependent) |
| USB | USB Type-C 2.0, OTG | USB Type-C 2.0 |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
| Features | ||
|---|---|---|
| Sensors | Fingerprint (side-mounted), accelerometer, compass | Fingerprint (side-mounted), accelerometer, compass |
| Battery | ||
|---|---|---|
| Charging | 33W wired, PD 2.0, PPS, QC3 18W reverse wired | 25W wired |
| Type | 7000 mAh | 5000 mAh |
| Misc | ||
|---|---|---|
| Colors | Midnight Black, Titan Gray, Ripple Green | Brave Black, Optimistic Blue, Magical Blue, Personality Yellow |
| Models | 25057RN09E | SM-A155F, SM-A155F/DSN, SM-A155M, SM-A155M/DS, SM-A155P, SM-A155R |
| Price | € 159.00 / $ 219.99 / £ 179.00 | € 168.99 / $ 125.00 / £ 113.00 |
| SAR EU | 1.00 W/kg (head) 1.00 W/kg (body) | 0.42 W/kg (head) 1.29 W/kg (body) |
| EU LABEL | ||
|---|---|---|
| Battery | 67:03h endurance, 1000 cycles | - |
| Energy | Class B | - |
| Free fall | Class D (45 falls) | - |
| Repairability | Class C | - |
Xiaomi Redmi 15
- Exceptional battery life (67:03h endurance)
- More modern Snapdragon 6s Gen 3 chipset
- Faster 33W charging with multiple standards
- Display brightness data unavailable, potentially lower than A15
- Camera performance unknown without detailed specs
Samsung Galaxy A15
- Bright 808 nit display for outdoor visibility
- Samsung’s One UI software experience
- Established brand reputation
- Significantly shorter battery life (15:28h)
- Older MediaTek Helio G99 chipset
- Slower 25W charging
Display Comparison
The Samsung Galaxy A15 immediately stands out with its measured peak brightness of 808 nits, a significant advantage over the Redmi 15 (brightness data unavailable). This makes the A15 far more usable in direct sunlight. While the Redmi 15’s panel technology isn’t specified, the A15’s brightness suggests an LCD panel. Both phones likely utilize similar resolutions given their price point, but the A15’s superior brightness is a clear win for outdoor visibility and overall viewing experience. Bezels are expected to be comparable, typical of this price bracket.
Camera Comparison
Camera details are limited, but focusing on the main sensors is crucial. Without specific sensor sizes, it’s difficult to definitively declare a winner. However, the omission of OIS (Optical Image Stabilization) on both devices suggests a reliance on software stabilization. The presence of a 2MP macro camera on the A15 is largely inconsequential; its utility is limited by the low resolution and lack of optical stabilization. Image processing will likely differ, with Samsung typically favoring more saturated colors and Xiaomi aiming for a more natural look. Without sample images, a clear camera winner cannot be determined.
Performance
The Xiaomi Redmi 15 is powered by the Qualcomm Snapdragon 6s Gen 3 (6nm), featuring an octa-core CPU with 2x2.3 GHz Cortex-A78 and 6x2.0 GHz Cortex-A55 cores. The Samsung Galaxy A15 utilizes the MediaTek Helio G99 (6nm) with a similar octa-core configuration: 2x2.2 GHz Cortex-A76 and 6x2.0 GHz Cortex-A55 cores. While both are 6nm chips, the Snapdragon 6s Gen 3 generally offers a slight performance edge in CPU and GPU benchmarks, translating to smoother multitasking and potentially better gaming performance. The Redmi 15’s newer architecture suggests improved efficiency. RAM configurations are not specified, but LPDDR4X is likely on both devices, limiting memory bandwidth.
Battery Life
The Xiaomi Redmi 15 dominates in battery endurance, achieving an impressive 67:03h in testing, and is rated for 1000 charge cycles. This is a massive leap over the Samsung Galaxy A15’s 15:28h active use score. The Redmi 15 also supports faster 33W wired charging with PD 2.0, PPS, and QC3 standards, alongside 18W reverse wired charging. The Galaxy A15 is limited to 25W wired charging. While the A15’s battery capacity isn’t specified, the significantly lower endurance score indicates a smaller capacity. The Redmi 15’s combination of battery life, charging speed, and reverse wireless charging provides a substantial advantage.
Buying Guide
Buy the Xiaomi Redmi 15 if you need a phone that can reliably last through two full days of moderate use, or if you frequently find yourself away from a charger. Its efficient chipset and massive battery are ideal for travelers, commuters, or anyone who dislikes daily charging. Buy the Samsung Galaxy A15 if you prioritize a vibrant, easily visible display, especially for outdoor use, and prefer the Samsung ecosystem and One UI software experience.